| 释义 |
银河系yínhéxì宇宙中的一个大的恒星系,由1,000亿颗以上的大小恒星和无数星云、星团构成,形状像怀表,中心厚,直径为10万光年。太阳是银河系中的许多恒星之一,距离银河中心约有3万光年。我们平常在夜晚看到的天空的银河,就是银河系的密集部分在天球上的投影。{Milky Way galaxy; large galaxy in the universe composed of 100 billion fixed stars (big and small) and countless nebulae and clusters, in the shape of a pocket watch, thick at the centre, and 100,000 light years in diameter. The sun is one of the myriad of stars in the Milky Way galaxy, about 30,000 light years from the centre of the galaxy. The Milky Way we see in the night sky is the projection of the dense part of the Milky Way galaxy on the celestial sphere.} |